Naruto's uppercut in chapter 698 was not due to his incredible stamina/chakra

[Math42]

You know OP was just trying to troll and start a Naruto vs sasuke war when he posts and leaves, this man is lord of bait.

I apologize, for I was obliged to take my temporary leave to attend to a certain matter. It was never and will never be my intention to initiate a war between the fanbases of my two favorite characters. I am simply employing critical thinking.